4233640155161 has 2 divisors, whose sum is σ = 4233640155162. Its totient is φ = 4233640155160.

The previous prime is 4233640155119. The next prime is 4233640155163. The reversal of 4233640155161 is 1615510463324.

4233640155161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2723592409561 + 1510047745600 = 1650331^2 + 1228840^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4233640155161 is a prime.

Together with 4233640155163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4233640155163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2116820077580 + 2116820077581.

It is an arithmetic number, because the mean of its divisors is an integer number (2116820077581).

Almost surely, 2^{4233640155161} is an apocalyptic number.

It is an amenable number.

4233640155161 is a deficient number, since it is larger than the sum of its proper divisors (1).

4233640155161 is an equidigital number, since it uses as much as digits as its factorization.

4233640155161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 4233640155161 in words is "four trillion, two hundred thirty-three billion, six hundred forty million, one hundred fifty-five thousand, one hundred sixty-one".